Bridge-gate



(No Modelf I v A. J. LAGERQUI$T.

BRIDGE GATE- 1 N07 501,516. Patented J11'1y18, 1893.

WiTnEssgs:

v IfnLrEnTnr: a I v NITED STATES PATENT OFFICE.

ANDREW J. LAGERQUIS'I, OF BRACEVILLE, ILLINOIS.

BRIDGE-GATE.

SPECIFICATION forming part of Letters Patent No. 501,516, dated July 18,1893.

Application filed April 26, 1893.

To all whom it may concern: Y

Be it known that I, ANDREW J. LAGERQUIST, a citizen of the United Statesof America, residing at Braceville, in'the county of Grundy and State ofIllinois, have invented certain new and useful Improvements 'in Bridge-Gates, of which the following is a specification, reference being hadtherein to the accompanying drawings and the letters of referencethereon, forming a part of this specification,'in which Figure 1 is aplan of one end of a swing bridge, and of a pair of gates connected bycords or chains, and having arms thereto attached adapted to be engagedby an arm of the bridge as it may swing in either direction, and a planof acurved guide way for guiding said arm attached to the bridge forengaging said gate arms. Fig. 2 is a side elevation of the two bridgegates, and of a frame for sup porting their track, and a side view of aguide way for directing the course of an arm of the bridge for movingsaid gates. Fig. 3 is a perspective view of the guide way for directingthe course of the arm of the bridge, and showing a portion of said armengaged with arms designed to be attached to the said gates. Fig. 4. isa plan of the two bridge gates and of the cord and pulley mechanism forconnecting said gates. Fig. 5 is a cross section of Fig.3, taken on line1 looking in the direction of the arrow, and Fig. 6 is a perspectiveview of the two outer ends of the arms connected to the two gates,showing them provided with notches for receiving an arm connected to abridge.

This invention relates to certain improvements in bridge gates for usein connection with a swing bridge for closing the road way approach totravel when the bridge is turned away from its approach,whichimprovements are fully set forth and explained in the followingspecification and claims.

Referring to the drawings H represents a portion, or one end of a swingbridge, shown as having three trusses, and two road Ways, the middletruss having a projecting arm T, pivotally connected at its inner end atT to the upper part of the middle truss so that its outer end mayvibrate vertically.

G and G represent a pair of gates suspend= Serial No. 471,859. (Nomodel.)

ed by means of roller hanger P ona track on frame 13 above and acrossthe road way or approach to the bridge in such manner that they may moveto or from each other on their tracks as the bridge is turned to or fromits approach. Said gates are respectively provided with arms A and Apivotally connected thereto, the outer ends of which arms pass throughapertures in a curved guide way R as shown in Figs. 1 and 3, so thatsaid arms are in contact with and cross each other, and so that thenotches n in their sides facing each other will be opposite, or registerwith each other when the gates are open,as shown in Figs. 2, 3 and 6.Said gates are connected with each other by means of a cord or chain Dpassing around the pulleys P, P, P and P in such manner that when onegate is moved in either direction, it will through the medium of suchcord and pulley connection move the other gate in the oppositedirection. The manner of connecting said gates by means of cords orchains is shown particularly in Fig. 4:. One of said cords or chains isshown in full lines, and one is shown in broken lines. Theone shown infull lines is connected to the outer end of gate C, and from thencepasses around the outer pulley P, from thence around the inner pulley Pand from thence around pulley l? to gate 0 to which it attaches. The oneshown in broken lines is connected to the outer end of gate 0, and fromthence passes around the outer pulley P from thence around the innerpulley P, and from thence around pulley P to gate 0 to which itattaches, so that if either gate is moved, it will move the oppositegate in the opposite direction. A V

R is a curved guide arranged adjacent to the upper side of the gates, sothat their arms A and A may pass through boxes therein as shownparticularly in Fig 3. The face of said guide, on its side toward thebridge is provided with a longitudinal guide channel or groove as shownparticularlyin Fig. 3 for the reception of the outer end of the arm T attached to the bridge, as shown also in Fig. 5. As the bridge swings,said arm traverses said channel in either direction from one end to theother, forthe purpose of engaging the arms A and A of the gates, andthrough their medium move the gates to or from each other to open orclose the gates.

Figs. 2, 3 and 6, represent the arms A and A in the positions they arein when the gates are open so that the roadway or approach to the bridgeis free to travel, and at such time the two notches or recesses 12, n,of said arms are opposite each other, or register with each other asshown in said figures, and the arm T of the bridge will lie in the notchof arm A as shown particularly in Fig 6, said arm T being no greater inthickness than the notch in said arm A. Looking at Fig. 3, if the bridgeand its arm T should be moved toward the right of the figure, the camform of the channel of guide R, shown at s will immediately elevate theouter end of arm T out of the notch n in arm A into notch 91 of arm A,and cause arm T to carry with it arm A until said arm approaches theoutlet of said guide where the point of arm A will pass upon theprojecting point w, and the cam form of said guide channel shown at o,will permit arm T to pass out from the notch or and move out of itsguide channel and permit the bridge to swing farther open. Suchoperation and movement of the arms T and A will cause the two gates tomove toward each other across the roadway, on account of their being soconnected by means of said cord and pulley mechanism. If the bridgeshould swing in the opposite direction, or to the left from that shownin Fig. 3, arm T will remain in notch nin arm A, as is also shown inFig. 6, and carry said arm with it until the cam form of said guidechannel shown at 4 will elevate said arm T out of said notch 01 andpermit arm T to pass out of its guide channel, and the outer end of armA will pass under the cam shaped flange shown at as for the purpose ofbringing the outer end of arm A down and cause arm T to be so releasedfrom its said notch or recess 11. It will thus be seen that when thebridge is When the bridge returns from either direction, its arm T willenter its said guide way R and the forms of the cams as and n will causeit to engage a notch or in either arm A or A according to which arm Tengages, and return the said arms A and A to their first positions, thegates being open, and the bridge at the approach open to travel; whenfurther move ment of the bridge in either direction will close the gatesacross the roadway as before described, so that as the bridge is turned,it automatically opens and closes the gates across the roadway.

It is intended to provide each approach or roadway with such gates to beoperated simultaneously by the bridge as it is turned, and the operatingmechanism is located above the roadway or approach as shown so as to beless liable to be obstructed by wear and the elements.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows, to wit:

1. In a bridge gate, the combination of the bridge H having arm T, gatesG, G having respectively armsA and A provided with the notches orrecesses 01, cord D and pulleys P, P. P P for connecting said gates insuch manner that they may move each other simultaneously in eitherdirection, and guide R having the cam surfaces 0" s. v. a; fordetachably connecting arms A, A. with arm '1. all arranged to operatesubstantially as and for the purpose set forth.

2. In a bridge gate, the combination of the bridge H having arm T, armsA and A adapted to be detachably connected with arm T, and gatesconnected with arms A and A in such manner as to be opened and closed bythe bridge when it swings substantially as and for the purpose setforth.

ANDREW J. LAGERQUIS'I.

Witnesses:

THos. H. IIUTCHINS, RAY HUTCHINS.

